Re: [Numpy-discussion] Re: numpy.sin

[Alan G I. <ai...@am...>]

On Thu, 25 May 2006, Robert Kern apparently wrote:=20
> The method you showed of using % (2*pi) is only accurate=20
> when the values are created by multiplying the same pi by=20
> another value. Otherwise, it just introduces another=20
> source of error, I think.

Just to be clear, I meant not (!) to presumptuosly propose=20
a method for improving thigs, but just to illustrate the=20
issue: both the loss of accuracy, and the obvious conceptual=20
point that there is (in an abstract sense, at least) no need=20
for sin(x) and sin(x+ 2*pi) to differ.

Thanks,
Alan